I believe Maggie caught the opening paragraph describing how gold had been used in the past to execute folks, but the researchers, in this case, used 750 g of "pure lead" to kill the already dead cow's larynx. And, not to ruin the surprise, but death appears to be brought on by the bursting of internal organs (via steam) and suffocation (via lung collapse because of big sciency words). Interesting and horrible, Maggie--you'll do well as a parent.